Table 7.

Implant survival characteristics in the included studies

Author(year)	Implant survival at the end of the studya	Implant loss/failing implants	Observation period for surviving implants	Comments
Palmqvist et al. 1996 [29]	NR	NR	4.9 ± 1.2 years range: 2–6 years	No data provided for implant survival and implant loss
Cune et al. 1996 [30]	94.5 ± 2.7%	Overall: 24 FISP: 5 RISP: 19	513.3 ± 182.8 days	Implant loss most frequently in the maxilla (18/24)
Makkonen et al. 1997 [32]	Overall: 98.7% FISP: 100% RISP: 97.4%	Overall: 2 FISP: 0 RISP: 2	5 years	Both lost implants judged to be non-osseointegrated at the time of abutment connection
Tinsley et al. 2001 [33]	FISP: 71% ± 4.37 RISP: 71% ± 4.94	Overall: 13 FISP: 7 RISP: 6	72 months	Thirteen implants had extensive bone loss > 4 mm and were defined as “failing implants” according to the authors criteria
Raghoebar et al. 2003 [34]	Overall: 93% FISP: 94% RISP: 93%	Overall: 12 FISP: 3 RISP: 9	3 years	One implant failed prior to loading. Eight implants failed after four weeks and three implants failed after one year of observation.
Quirynen et al. 2004 [31]	NR	NR	10 years	No data provided for implant survival and implant loss.

^aValues are shown as cumulative implant survival rates

^bNR: not reported